EP 2740136 A1 20140611 - DIFFERENTIAL FOR A HYDRO-MECHANICAL DRIVE FOR ELECTRIC POWER SWITCHES
Title (en)
DIFFERENTIAL FOR A HYDRO-MECHANICAL DRIVE FOR ELECTRIC POWER SWITCHES
Title (de)
DIFFERENTIALZYLINDER FÜR EINEN HYDROMECHANISCHEN ANTRIEB FÜR ELEKTRISCHE LEISTUNGSSCHALTER
Title (fr)
DIFFÉRENTIEL POUR ENTRAÎNEMENT HYDROMÉCANIQUE POUR DISJONCTEURS ÉLECTRIQUES
Publication
Application
Priority
- DE 102011109227 A 20110803
- EP 2012003168 W 20120726
Abstract (en)
[origin: CN202307567U] The utility model relates to a differential cylinder for a hydraulic mechanical driver of an electric power switch and the driver, in particular to the differential cylinder (1) which is used for operating the hydraulic mechanical driver of an electric switch, particularly a high-voltage switch. The differential cylinder (1) comprises a first pressure region (3), a second pressure region (4) and a piston (2), wherein the first pressure region (3) is used for loading by using working pressure; the piston (2) can move in a moving region and can move depending on pressure difference between the first pressure region (3) and the second pressure region (4); and the differential cylinder (1) is characterized by being provided with an attenuation device; when the piston (2) moves in a zone (D) of the moving region in the direction of the second pressure region (4), the attenuation device provides auxiliary attenuation to resist against movement of the piston (2), wherein the auxiliary attenuation is adjustable.
IPC 8 full level
H01H 33/34 (2006.01); F16F 9/49 (2006.01); H01H 3/24 (2006.01); H01H 3/60 (2006.01)
CPC (source: EP US)
F04B 19/22 (2013.01 - US); F16F 9/49 (2013.01 - EP US); H01H 3/24 (2013.01 - EP US); H01H 3/605 (2013.01 - EP US); H01H 33/34 (2013.01 - EP US)
Citation (search report)
See references of WO 2013017227A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102011109227 B3 20121129; CN 202307567 U 20120704; EP 2740136 A1 20140611; EP 2740136 B1 20150708; HK 1193674 A1 20140926; HU E027851 T2 20161128; JP 2014522084 A 20140828; JP 6040238 B2 20161207; KR 20140060491 A 20140520; MX 2014001294 A 20140513; RU 2560136 C1 20150820; US 2014144315 A1 20140529; US 9714645 B2 20170725; WO 2013017227 A1 20130207
DOCDB simple family (application)
DE 102011109227 A 20110803; CN 201120339779 U 20110831; EP 12743079 A 20120726; EP 2012003168 W 20120726; HK 14107005 A 20140710; HU E12743079 A 20120726; JP 2014523218 A 20120726; KR 20147002555 A 20120726; MX 2014001294 A 20120726; RU 2014107876 A 20120726; US 201414171505 A 20140203